Yes, the meeting can still go ahead. There is an issue where you want to add motions to a notice of meeting that has gone out, as the owners are required to have notice of any motions. You can always withdraw a motion, other than a motion that is required to be included under the Act. You can advise at the meeting that motions have been withdrawn.
I don’t know what the motions are, but for example if they were motions that had been put up by an owner, the owner may decide to withdraw them. (not sure why those motions would be the first three but anyway…)